diff options
Diffstat (limited to 'arch/mips/include/asm')
| -rw-r--r-- | arch/mips/include/asm/io.h | 28 |
1 files changed, 20 insertions, 8 deletions
diff --git a/arch/mips/include/asm/io.h b/arch/mips/include/asm/io.h index 65d2a4d481fc..9833a67eb9e6 100644 --- a/arch/mips/include/asm/io.h +++ b/arch/mips/include/asm/io.h @@ -311,7 +311,7 @@ static inline void iounmap(const volatile void __iomem *addr) #define war_io_reorder_wmb() barrier() #endif -#define __BUILD_MEMORY_SINGLE(pfx, bwlq, type, irq) \ +#define __BUILD_MEMORY_SINGLE(pfx, bwlq, type, barrier, irq) \ \ static inline void pfx##write##bwlq(type val, \ volatile void __iomem *mem) \ @@ -319,7 +319,10 @@ static inline void pfx##write##bwlq(type val, \ volatile type *__mem; \ type __val; \ \ - war_io_reorder_wmb(); \ + if (barrier) \ + iobarrier_rw(); \ + else \ + war_io_reorder_wmb(); \ \ __mem = (void *)__swizzle_addr_##bwlq((unsigned long)(mem)); \ \ @@ -356,6 +359,9 @@ static inline type pfx##read##bwlq(const volatile void __iomem *mem) \ \ __mem = (void *)__swizzle_addr_##bwlq((unsigned long)(mem)); \ \ + if (barrier) \ + iobarrier_rw(); \ + \ if (sizeof(type) != sizeof(u64) || sizeof(u64) == sizeof(long)) \ __val = *__mem; \ else if (cpu_has_64bits) { \ @@ -383,14 +389,17 @@ static inline type pfx##read##bwlq(const volatile void __iomem *mem) \ return pfx##ioswab##bwlq(__mem, __val); \ } -#define __BUILD_IOPORT_SINGLE(pfx, bwlq, type, p) \ +#define __BUILD_IOPORT_SINGLE(pfx, bwlq, type, barrier, p) \ \ static inline void pfx##out##bwlq##p(type val, unsigned long port) \ { \ volatile type *__addr; \ type __val; \ \ - war_io_reorder_wmb(); \ + if (barrier) \ + iobarrier_rw(); \ + else \ + war_io_reorder_wmb(); \ \ __addr = (void *)__swizzle_addr_##bwlq(mips_io_port_base + port); \ \ @@ -411,6 +420,9 @@ static inline type pfx##in##bwlq##p(unsigned long port) \ \ BUILD_BUG_ON(sizeof(type) > sizeof(unsigned long)); \ \ + if (barrier) \ + iobarrier_rw(); \ + \ __val = *__addr; \ \ /* prevent prefetching of coherent DMA data prematurely */ \ @@ -420,7 +432,7 @@ static inline type pfx##in##bwlq##p(unsigned long port) \ #define __BUILD_MEMORY_PFX(bus, bwlq, type) \ \ -__BUILD_MEMORY_SINGLE(bus, bwlq, type, 1) +__BUILD_MEMORY_SINGLE(bus, bwlq, type, 1, 1) #define BUILDIO_MEM(bwlq, type) \ \ @@ -434,8 +446,8 @@ BUILDIO_MEM(l, u32) BUILDIO_MEM(q, u64) #define __BUILD_IOPORT_PFX(bus, bwlq, type) \ - __BUILD_IOPORT_SINGLE(bus, bwlq, type,) \ - __BUILD_IOPORT_SINGLE(bus, bwlq, type, _p) + __BUILD_IOPORT_SINGLE(bus, bwlq, type, 1,) \ + __BUILD_IOPORT_SINGLE(bus, bwlq, type, 1, _p) #define BUILDIO_IOPORT(bwlq, type) \ __BUILD_IOPORT_PFX(, bwlq, type) \ @@ -450,7 +462,7 @@ BUILDIO_IOPORT(q, u64) #define __BUILDIO(bwlq, type) \ \ -__BUILD_MEMORY_SINGLE(____raw_, bwlq, type, 0) +__BUILD_MEMORY_SINGLE(____raw_, bwlq, type, 1, 0) __BUILDIO(q, u64) |